Synthesis and Raman spectra of 3-deoxy-α-l-rhamnosides as model sugars of the Ascaris egg shell
摘要:
The synthesis of two 3-deoxy-alpha-L-rhamnosides (i.e., 3,6-dideoxy-L-arabino-hexopyranosides) as models of ascaroside natural products is reported. The present approach is based on a Ferrier rearrangement from L-rhamnal, epoxidation of the resulting glycal and reductive opening of the isolated beta-epoxide. The 3-deoxy-alpha-rhamnoside linked to a long aglycone chain was used to ascertain by Raman vibrational spectroscopy the presence of this peculiar sugar in the inner shell of Ascaris eggs. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and Raman spectra of 3-deoxy-α-l-rhamnosides as model sugars of the Ascaris egg shell
摘要:
The synthesis of two 3-deoxy-alpha-L-rhamnosides (i.e., 3,6-dideoxy-L-arabino-hexopyranosides) as models of ascaroside natural products is reported. The present approach is based on a Ferrier rearrangement from L-rhamnal, epoxidation of the resulting glycal and reductive opening of the isolated beta-epoxide. The 3-deoxy-alpha-rhamnoside linked to a long aglycone chain was used to ascertain by Raman vibrational spectroscopy the presence of this peculiar sugar in the inner shell of Ascaris eggs. (C) 2010 Elsevier Ltd. All rights reserved.
The synthesis of two 3-deoxy-alpha-L-rhamnosides (i.e., 3,6-dideoxy-L-arabino-hexopyranosides) as models of ascaroside natural products is reported. The present approach is based on a Ferrier rearrangement from L-rhamnal, epoxidation of the resulting glycal and reductive opening of the isolated beta-epoxide. The 3-deoxy-alpha-rhamnoside linked to a long aglycone chain was used to ascertain by Raman vibrational spectroscopy the presence of this peculiar sugar in the inner shell of Ascaris eggs. (C) 2010 Elsevier Ltd. All rights reserved.